Strategic predatory pursuit of the stealthy, highly manoeuvrable, slow flying bat Corynorhinus townsendii
Strategic predatory pursuit of the stealthy, highly manoeuvrable, slow flying bat Corynorhinus townsendii
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DOI：
10.1098/rspb.2023.0138
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发表时间：
2023-06-28
影响因子：
4.7
通讯作者：
Corcoran，Aaron J.
中科院分区：
文献类型：
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作者：
Bortoni，Alberto;Swartz，Sharon M.;Corcoran，Aaron J.
捕食者捕捉猎物的能力取决于它根据猎物的运动或逃跑行为在环境中导航的能力。在涉及主动追逐的捕食者-猎物相互作用中，追逐行为可以被研究为规定捕食者应该如何引导以捕获猎物的规则的集合。目前还不清楚这种行为在物种内部和物种之间的变化程度，因为大多数研究都详细描述了高速，开放区域觅食的追求行为。本文分析了44只成功捕获的汤森大耳蝠（Corynorhinustownsendii）的追逐行为（n= 4）。该物种觅食接近植被使用缓慢和高度机动的飞行，这与运动能力和喂养生态的其他类群研究的日期。我们的研究结果表明，该物种依赖于初始隐身方法，这通常足以捕获猎物（44次试验中有32次）。在初始方法不足以执行捕获尝试的情况下（44次试验中的12次），C。汤森德继续它的追求作出反应，以猎物的运动的方式最好的模仿与纯追求，或直接跟随猎物，比例导航，或移动到拦截点的组合。
A predator's capacity to catch prey depends on its ability to navigate its environment in response to prey movements or escape behaviour. In predator–prey interactions that involve an active chase, pursuit behaviour can be studied as the collection of rules that dictate how a predator should steer to capture prey. It remains unclear how variable this behaviour is within and across species since most studies have detailed the pursuit behaviour of high-speed, open-area foragers. In this study, we analyse the pursuit behaviour in 44 successful captures byCorynorhinus townsendii, Townsend's big-eared bat (n= 4). This species forages close to vegetation using slow and highly manoeuvrable flight, which contrasts with the locomotor capabilities and feeding ecologies of other taxa studied to date. Our results indicate that this species relies on an initial stealthy approach, which is generally sufficient to capture prey (32 out of 44 trials). In cases where the initial approach is not sufficient to perform a capture attempt (12 out of 44 trials),C. townsendiicontinues its pursuit by reacting to prey movements in a manner best modelled with a combination of pure pursuit, or following prey directly, and proportional navigation, or moving to an interception point.